/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

suite("topn_filter") {
    String db = context.config.getDbNameByFile(new File(context.file.parent))
    sql "use ${db}"
    sql "set topn_opt_limit_threshold=1024"
    sql """ set topn_filter_ratio = 1 """
    sql "analyze table nation with sync"
    // limit + offset > table.rows, do not generate topn filter
    explain{
        sql "select * from nation order by n_nationkey limit 40;"
        notContains ("TOPN OPT:")
    }
    explain{
        sql "select * from nation order by n_nationkey limit 4 offset 21;"
        notContains ("TOPN OPT:")
    }

    explain{
        sql "select * from nation order by n_nationkey limit 4 offset 20;"
        contains ("TOPN OPT:1")
    }

}